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Finding the Fourth Proportional to 3,167.73, 4,751.57 and 859.23

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Solution

The fourth proportional to 3,167.73, 4,751.57 and 859.23 is: 1,288.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.73 : 4,751.57 = 859.23 : x
  2. Step 2: Convert to fraction form
    3,167.73/4,751.57 = 859.23/x
  3. Step 3: Cross multiply
    3,167.73x = 4,751.57 × 859.23
  4. Step 4: Simplify right side
    3,167.73x = 4,082,693.64
  5. Step 5: Solve for x
    x = 4,082,693.64/3,167.73
  6. Step 6: Final answer
    x = 1,288.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.